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Erschienen in:
2004 | OriginalPaper | Buchkapitel
Challenges in the Analysis of the Local Piezoelectric Response
verfasst von : C. Harnagea, A. Pignolet
Erschienen in: Nanoscale Characterisation of Ferroelectric Materials
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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The piezoresponse technique is based on the detection of local vibrations of a cantilever induced by a probing AC signal applied between the conductive tip of a scanning force microscope (SFM) and the bottom electrode of a ferroelectric sample. The cantilever vibrations are converted into an electrical signal by the position sensitive detector of the SFM and extracted from the global deflection signal using a standard lock-in technique. This electrical signal representing the cantilever vibrations is further referred to as the piezoresponse signal (PRS), for reasons that will be explained later.